France Tax Breach Hits 678K, Adding to Crypto Crime Risks

French Interior Minister Laurent Nuñez promised to strengthen security for crypto-sector actors after the surge in incidents. He said authorities recorded 77 cases of violence tied to cryptocurrency, BFMTV reported. In August, police arrested four men in Marseille who were holding two women hostage while demanding crypto.

For crypto users, the lesson is not that self-custody fails. Non-custodial wallets keep private keys outside centralized databases, reducing the consequences of a conventional account breach. The bigger vulnerability is often the information surrounding ownership: names, addresses, phone numbers, and purchase records.

A separate August breach involving Trezor's logistics provider ShipMonk reinforces that point. Nearly 14,000 customers were affected, with names, addresses, phone numbers, and emails exposed. Trezor said its own systems, devices, and wallet security were not compromised.

The overlap between data breaches and physical crypto crime strengthens the case for privacy-conscious security practices, analysts said. Users can reduce unnecessary personal-data exposure, separate public identities from wallet activity where practical, and treat unsolicited messages requesting wallet credentials as potential phishing attempts. Blockchain transparency remains useful for auditing transactions, while privacy-preserving technologies can limit how easily financial activity connects to a real-world identity.